S.F.
My son's preschool had a great policy. It asked all parents to let their kids do as much for themselves as possible. They didn't care if clothes didn't match, socks were inside out, shoes were on the wrong feet, whether hair accessories matched the rest of the outfit, etc., etc. They just wanted the kids to have a chance to make decisions for themselves. As long as the kids were clean underneath, hair and teeth were brushed, the rest of it was not important. The kids looked a total disaster: mismatched tops, shorts, colors, designs, hairstyles, bed head was everywhere! LOL...you should've seen the look on my mom's face when we picked my son up one day! There was no way she could handle that much "bad" fashion decision-making! But, it wasn't about what the parents were comfortable with; it was all about the kids learning to make their own choices.
That said, I would humbly ask you...are these the fights worth fighting? Is it such a problem that she choose her own clothes, plate, cup, spoon, fork, hairstyle & accessories? Really ask yourself what's more important: your daughter's budding ability to make choices OR that everything matches? Another humble question...does it bother *you* so much if she's mismatched? The answer may provide some illuminating, and possibly uncomfortable, answers.
Here's what I see...if you let your daughter make as many choices as she can, when YOU decide to make a choice--what the family will watch, what sock to put on first, etc.--and she screams at you, you can simply look up and say, very calmly, "Sweetie, you got to choose [fill in three things here] today. Now, it's my turn to choose [fill in what you're doing here]. You may either accept my choice or you may sit in your room. Which do you want to do?" Now, the burden of choice is on her. If she stays and continues to complain, calmly walk her to her room and let her sit there.
She may spend a lot of time in her room, but you'll be much happier with less fights. Capitalize on your daughter's decision-making capabilities and use it to your advantage! <wink>
Good luck, mama! Budding CEO's can be tough to deal with!